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(No Model) N. H. RAYMOND.

ELECTRIC BELL.

Patented Sept. 27, 1892.

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described and illustrated in the following UNITED STATES PATENT OFFICE.

NELSON H. RAYMOND, OF BUFFALO, N EWYORK, ASSIGNOR TO CHARLES M.

tale, in the county of PROCTOR, or SAME PLACE.

ELECTRIC BELL.

SPECIFICATION forming part of Letters Patent No. 483,369, datedSeptember 27, 1892. Application filed August 29, 1891. Serial No.404.053. (No model.)

To all whom it may concern.-

Be it known that I, NELSON H. RAYMOND, a citizen of the United States,residing at Buf- Erie, in the State of New York, have invented certainImprovements in Electric Bells, of which the following is aspecification, reference being had to the ac- Figure 1 is a frontelevation.

companying' drawings.

My invention relates to certain improvements in electric bells lainbase, whereby their construction is simplified and cheapened and theyare rendered more durable in practical use and much less liable to getout of adjustment.

My improvements in electric bells are fully specification and theaccompanying drawings, and the novel features thereof specified in theclaims annexed to the said specification.

In the accompan yin gdrawings,representin g my improved electric bellwith porcelain base, Fig. 2 is a side elevation. Fig. 3 is alongitudinalsection on the line 3 3, Fig. 1. Fig. 4 is a transverse section throughthe armature, contact-screw, and insulated supporting-post on the line 44, Fig. 1. Fig. 5 is a section through one of the binding-posts on theline 5 5, Fig. 1.

My improved electric bell consists, essentially, of the base A, made ofporcelain, china, or other similar material capable of acting as aninsulator, the gong B, the magnet C or magnets C 0, striker D, armatureF, and suitable electrical connections and devices for making andbreaking the electric circuit. The base A is preferably made of moldedporcelain adapted and arranged to support the various operative parts ofthe bell-in their proper relative positions and to insulate the partsforming the electric circuit from each other. The base is provided withone or more perforations R R, adapted to receive the screws or otherdevices by which the bell is secured in place for use. At its upper endthe porcelain base A is provided with a pro jecting boss d, formedintegral therewith, and

to which the gong B is secured by the bolt and nut f or other suitabledevice. This arrangement cheapens the construction of the bell byobviating the use of the post ordinarily employed to carry the gong. Theboss provided with a p0rced is made of any suitable size or height, andto reduce the weight it may be made hollow, as indicated in Fig. 3. Theopening for the bolt or screw f is formed through the boss at the timethe base is molded.

The magnet C is secured to the porcelain base by the frame H, which fitsinto a suitable recess formed in the front of the base, as indicated inFig. 3-, being held in place by the bolt J, passing through an openingin the porcelain and fastened by a nut or screw in a recess g in theback of the base. As the frame H fits the recess in the front of thebase, a single screw serves to hold it and the electro-magnet in place.vided with a projecting plate I, to which the electro-magnet is securedin any suitable way. The frame II is also provided with one or moreprojecting hooks X, which engage in suitable openings in the cover K,which is fastened to the base by the pin 2', Fig; 3, en tering a hole inthe spring L, which extends through the opening N in the base and along.its rear side in a suitable recess, as indicated at P, Fig. 3, beingsecured in place by the nut or screw on the fastening device J. Thisconstruction enables me to attach the electromagnet and the cover to thebase bya single bolt or screw, and also provides for the insulation ofthe magnet from the posts T and E E and the other parts formingtheelectric circuit without any of the insulating devices ordinarilyemployed.

The electric current passes from the binding-post E through the wire V,Fig. 1, to the electro-magnet and thence through the frame H and arm Sto the spring Z, to the contactscrew Y, and thence to the binding-post Ethrough the insulated post T and the wire U. When it is desired to ringthe bell, the circuit is closed and, the spring Z being in contact withthe screw Y, the electro-magnet attracts the armature F, causing thestriker D to strike against the gong and breaking the circuit betweenthe spring and the screw, when the magnet ceases to attract the armatureand the spring carries it away from the magnet, thereby again closingthe circuit and producing a repetition of the operation as long as thecircuit remains closed.

The wires U and V may be located either 2 aeaeoe ugfrbnt of pr behintlthe base. I prefer, howindicated in Fig. 5 -fl'eThe lower end of the' 5spring Z is attached to the arm S on the frame H.- The spring thenceextends upward, being fastened to the armature by one or more screws orrivets a and is offset or bentto bring it into suitable relation withthe conro tact-screw Y. I

The construction and arrangement of the contact-screw and itssupporting-post will be understood from an examination of the sectionalview Fig.4. The contact-screw passes r 5 through a threaded hole-in theupper end of the post, which is secured in an opening in the base by anut or screw I), located in a recess. in the rear side of the base. Theporcelain base itself serves as an insulator for thesupporting-post,thcreby dispensing with the insulating devices necessaryat this point in bells of the usual construction.

The heads of the screws by which the hindin -posts are secured inplaceare located in z 5 suitable recesses in the rear side of the base,

asindicated at e, Fig. 5, so that its surface is plane and without anyprojections, whichmight interfere with its attachment to a wall or othersupportf By the. use of porcelain all 0 openings for binding or otherposts can without extra expense be made square or of such shape as toprevent the posts turning in the baseshould the screw become set orrusted.

The porcelain base may be ornamented in any preferred manner, and it maybe colored 5 to correspond or contrast with any surface to which itmaybe attached.

By constructing the porcelain base as herein described the cost ofmanufacturing electric bells is materiallyreduced, and they are made atthe same time more ornamental and more durable and less liable to getout of adj ustment. The coverK may also be made of por celain or othersimilar material. I

-Iclaima. The combination, in' an electric bell, of the porcelain baseA, having integral projecting boss d, the gong G, attached to the bossby screw f,-and the electro-magnet 0, having frame H, seated on thefront of the base and secured thereto by a suitableattachingdevice,,substantially as described. 7

2. The combination, with the porcelain base of an electric bell, of anelectro-magnet having a frame seated in a recess in the front of thebase and secured thereto by a suitable attaching device, substantiallyas described.-

3. The eombinatiomwith the porcelain base of an electric bell, of theelectro-magnet C, the frame H, coverK,spring L, passing through anaperture inthe base, and bolt or screw J, substantially as described.

NELSON H RAYMOND.

In presence of- AL ERT A. HoR'rzELn, STEWART C. NEWTON.

